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SARAH TIEN D.M.D.
NPI 1639547946
Dentist in Seatac, WA

Active since September 03, 2015PECOS Enrolled
4040 S 188TH ST STE 201, SEATAC, WA 98188(206) 439-2149 Get Directions Write a Review

NPPES record last updated: February 18, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Feb 18, 2025, Jun 1, 2021, May 27, 2021 (3 updates tracked since 2021).

About Sarah Tien D.m.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

SARAH TIEN D.M.D. (NPI 1639547946) is an individual dentist in Seatac, Washington, licensed in Washington (DE60976626) and active in the NPI registry since September 2015. She is enrolled in Medicare PECOS and maintains a secondary practice location in Lake Station.

NPPES Registry Identity

NPI1639547946
Entity TypeIndividualFemale
Primary Taxonomy122300000X
Provider Legal NameSARAH TIENCredential: D.M.D.
Location Address4040 S 188TH ST STE 201Seatac, WA 98188-5070
Mailing Address955 Powell Ave SwRenton, WA 98057-2908 · (425) 277-1311 · Fax (425) 277-1566
Phone(206) 439-2149
Sole ProprietorNo
Enumeration DateSeptember 3, 2015
Last NPPES UpdateFebruary 18, 20253 updates tracked since enumeration
NPPES CertifiedFebruary 18, 2025
✔ NPI 1639547946 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentistDental Providers
Taxonomy Code122300000X
Licenses✔ Licensed in WA · DE60976626✔ Licensed in IN · 12012458A✔ Licensed in IL · 319019500
Definition
A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist.
4040 S 188TH ST STE 201, Seatac, WA 98188
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Secondary Practice Location 1

Location 13099 Central AveLake Station, IN 46405-2207 · Phone (219) 763-8112 · Fax (219) 764-5384

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Best Life, Blue Cross and Blue Shield of Montana and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Sarah Tien D.m.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Sarah Tien reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Healthpoint
Same address
Federally Qualified Health Center (FQHC)
4040 188TH STREET, SUITE #201
Seatac, WA 98188
  • Reassigned Medicare billing, Washington enrollment
  • 403 clinicians in this Medicare group
NPI 1659496248 (425) 277-1311

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98188 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$97.43 typical visit price
range $63.67 – $189.37
Typical copayment $24.35 (range $15.91 – $47.34)
Most-billed visit code 99203
Established Patient
$78.74 typical visit price
range $21.12 – $155.00
Typical copayment $19.68 (range $5.28 – $38.75)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JOSE CARLOS FLORES RODARTE MD
Family Medicine
4040 S 188TH ST STE 201
SEATAC, WA 98188
King County (206) 277-7200
HEALTHPOINT
Pharmacy (Community/Retail Pharmacy)
4040 S 188TH ST STE 201
SEATAC, WA 98188
King County (877) 233-0246
BORAH KIM DDS
Dentist
4040 S 188TH ST STE 201
SEATAC, WA 98188
King County (206) 439-2149
REBECCA LIU DDS
Dentist
4040 S 188TH ST STE 201
SEATAC, WA 98188
King County (206) 439-2149
DR. DON ANSELM DAVIS M.D.
Family Medicine
4040 S 188TH ST STE 201
SEATAC, WA 98188
King County (206) 277-7200
DR. KATHARINE ERSING ND
Naturopath
4040 S 188TH ST STE 201
SEATAC, WA 98188
King County (206) 277-7200
LAURYN BERGERT MA, QMHP
Counselor
4040 S 188TH ST STE 201
SEATAC, WA 98188
King County (206) 277-7200
KELSEY WALCH
Physician Assistant
4040 S 188TH ST STE 201
SEATAC, WA 98188
King County (206) 277-7200

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Sarah Tien's NPI number?

The NPI number for Sarah Tien is 1639547946. It was assigned to this individual provider in the NPPES registry on September 3, 2015.

Where is Sarah Tien located?

Sarah Tien practices at 4040 S 188th St Ste 201, Seatac, WA 98188. The listed phone number is (206) 439-2149.

What is Sarah Tien's specialty?

The primary specialty registered for this NPI is Dentist with taxonomy code 122300000X.

Is Sarah Tien enrolled in Medicare?

Yes. Sarah Tien is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Sarah Tien's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sarah Tien reassigns Medicare benefits to Healthpoint (Seatac, WA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Sarah Tien's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Sarah Tien accept?

Health plans from Anthem Blue Cross and Blue Shield, Best Life, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and Blue Cross and Blue Shield of Texas and 6 other insurers list Sarah Tien as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Sarah Tien was last updated on February 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.